Read the docs
TI-2025-11367 Aliases CVE-2025-12390GHSA-rg35-5v25-mqvp

Org.keycloak.protocol.oidc.endpoints.logoutendpoint: offline session takeover due to reused authentication session id

Priority LOW 28CWE-384Published · Updated

Key facts

Attack vector
Local
Privileges required
Low
User interaction
Required
Attack complexity
High
Impact type
Spoofing
Confidentiality · integrity · availability
High · High · None
Fix status
Fixed

Attack profile from CVSS 3.1 · CNA. Fix status from CNA, GitHub and Red Hat. Impact type from CWE-384.

Summary

A flaw was found in Keycloak. In Keycloak where a user can accidentally get access to another user's session if both use the same device and browser. This happens because Keycloak sometimes reuses session identifiers and doesn’t clean up properly during logout when browser cookies are missing. As a result, one user may receive tokens that belong to another user.

Why it matters now

Exploitation None reported CISA SSVC · not in CISA KEV
EPSS 0.00141 3rd percentileScored 2026-11-07
Fix Fixed keycloak (Keycloak): 26.0.0org.keycloak:keycloak-services (Maven): 26.0.0Red Hat: 4 advisories

SSVC decision points

CISA ADP · SSVC 2.0.3

Exploitation
None
Automatable
No
Technical impact
Total

The decision (Track, Attend, Act) also depends on your mission and well-being impact; see CISA's SSVC guide.

Affected products

VendorProductAffected versionsFixed inStatusSource
Keycloakkeycloakbefore 26.0.026.0.0Patch availableCNA
Red HatRed Hat build of Keycloak 26.2—26.2.11-1Patch availableCNA
Red HatRed Hat build of Keycloak 26.2—26.2-12Patch availableCNA
Red HatRed Hat build of Keycloak 26.2—26.2-12Patch availableCNA
Red HatRed Hat build of Keycloak 26.2.11——Not affectedCNA
Red HatRed Hat build of Keycloak 26.4—26.4.4-1Patch availableCNA
Red HatRed Hat build of Keycloak 26.4—26.4-3Patch availableCNA
Red HatRed Hat build of Keycloak 26.4—26.4-3Patch availableCNA
Red HatRed Hat build of Keycloak 26.4.4——Not affectedCNA
—org.keycloak:keycloak-services (Maven)before 26.0.026.0.0Patch availableGHSA-rg35-5v25-mqvp
  • keycloak VendorKeycloak Affected before 26.0.0 Fixed in 26.0.0 Patch available CNA
  • Red Hat build of Keycloak 26.2 VendorRed Hat Affected — Fixed in 26.2.11-1 Patch available CNA
  • Red Hat build of Keycloak 26.2 VendorRed Hat Affected — Fixed in 26.2-12 Patch available CNA
  • Red Hat build of Keycloak 26.2 VendorRed Hat Affected — Fixed in 26.2-12 Patch available CNA
  • Red Hat build of Keycloak 26.2.11 VendorRed Hat Affected — Fixed in — Not affected CNA
  • Red Hat build of Keycloak 26.4 VendorRed Hat Affected — Fixed in 26.4.4-1 Patch available CNA
  • Red Hat build of Keycloak 26.4 VendorRed Hat Affected — Fixed in 26.4-3 Patch available CNA
  • Red Hat build of Keycloak 26.4 VendorRed Hat Affected — Fixed in 26.4-3 Patch available CNA
  • Red Hat build of Keycloak 26.4.4 VendorRed Hat Affected — Fixed in — Not affected CNA
  • org.keycloak:keycloak-services (Maven) Vendor— Affected before 26.0.0 Fixed in 26.0.0 Patch available GHSA-rg35-5v25-mqvp

CPE names CNA · 2

CPEVersionsRoleVendor
cpe:/a:redhat:build_keycloak:26.2::el926.2—Red Hat
cpe:/a:redhat:build_keycloak:26.4::el926.4—Red Hat
  • cpe:/a:redhat:build_keycloak:26.2::el9 Versions 26.2 — ·Red Hat
  • cpe:/a:redhat:build_keycloak:26.4::el9 Versions 26.4 — ·Red Hat

Remediation

  • Fix · CNA keycloak (Keycloak) Fixed in 26.0.0
  • Fix · GHSA-rg35-5v25-mqvp org.keycloak:keycloak-services (Maven) Fixed in 26.0.0 Advisory →

Red Hat 4 advisories

  • RHSA-2025:22088 Released 2025-11-25 · Red Hat rating Moderate
    Red Hat build of Keycloak 26.2.11 Images Security Update
    • Red Hat build of Keycloak 26.2 rhbk/keycloak-operator-bundle, rhbk/keycloak-rhel9, rhbk/keycloak-rhel9-operator
  • RHSA-2025:22089 Released 2025-11-25 · Red Hat rating Moderate
    Red Hat build of Keycloak 26.2.11 Security Update
    • Red Hat build of Keycloak 26.2.11
  • RHSA-2025:21371 Released 2025-11-13 · Red Hat rating Moderate
    Red Hat build of Keycloak 26.4.4 Images Security Update
    • Red Hat build of Keycloak 26.4 rhbk/keycloak-operator-bundle, rhbk/keycloak-rhel9, rhbk/keycloak-rhel9-operator
Show 1 more Red Hat advisories
  • RHSA-2025:21370 Released 2025-11-13 · Red Hat rating Moderate
    Red Hat build of Keycloak 26.4.4 Security Update
    • Red Hat build of Keycloak 26.4.4

Vendor assessments

Red Hat

Red Hat rating: Moderate. Red Hat's page for this CVE →

ProductStatusPlan or fix
Red Hat build of Keycloak 26.2Fixed RHSA-2025:22088
Red Hat build of Keycloak 26.2.11Fixed RHSA-2025:22089
Red Hat build of Keycloak 26.4Fixed RHSA-2025:21371
Red Hat build of Keycloak 26.4.4Fixed RHSA-2025:21370

Timeline

  1. 2026-10-02 Threatist record created from CVE-2025-12390
  2. 2026-10-03 Alias added: GHSA-rg35-5v25-mqvp

References

Advisory 5

Other 10

  • TI-2022-03994 Cross-site scripting in keycloak CVSS 3.1CRITICAL 10.0
  • TI-2017-05120 It was found that the Keycloak Node.js adapter 2.5 - 3.0 did not handle invalid tokens… CVSS 3.0CRITICAL 9.8
  • TI-2017-08952 Weak password recovery in Red Hat Keycloak CVSS 3.0HIGH 8.8
  • TI-2014-03024 The org.keycloak.services.resources.SocialResource.callback method in JBoss KeyCloak… CVSS 3.0HIGH 8.8
  • TI-2026-01295 Org.keycloak/keycloak-quarkus-server: keycloak: unauthorized access via jwt authorization grant with disabled users CVSS 3.1HIGH 8.1
  • TI-2017-08950 Insufficient session expiration in Red Hat keycloak CVSS 3.0HIGH 7.5
See all 21 →

Sources

This product uses the NVD API but is not endorsed or certified by the NVD. Sources and licences